Automatic electric safety device for boilers, &amp;c.



c. KAUSBN. AUTOMATIC ELECTRIC SAFETY DEVICE FOB BOILEBS, bo.

APPLIOATIOIIILBD IAVE. 13, 1908. l

Patente@ sept. 22,19%

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l l l CHARLES KAUSEN,

PATENT oEEIoE.

OF NEW YORK, N. Y.

AUTOMATIC ELECTRIC SAFETY DEVICE FOR. BOILERS, &c.

vspcification of Letters Patent.

Patented Sept. 22, 1908.

Application led March 13. 1908. Serial No. 420,920.

To all whom it may concern.'

Be it known that I. CHARLES hAUsEN, a

`citizen of the United States of America, and

a resident of NewA York, borough of the Bronx, county and State of N ewYork,' have invented certain new'and useful Improvements in AutomaticElectric Safety Devices for Boilers7 &c., of which the following is aspecification. I

M v invention has reference to improvements in automatic electric safetydevices, particularly adapted to be applied to boilers.

It is the special object ofthis invention to produce a safety devicewhich is actuated solely by the water and independent of steam. Thismakes the present device absolutely reliable in comparison to thoseheretofore employed in which a whistle is blown by steam because it mayhappen that practically no steam is in the boiler and when the waterdrops at such a moment there will be no signal.

T he novel safety device is applicable to anykind of boiler. lt is ofsim )le construction and therefore not easily liable t0 derangement andcheaply manufactured.

The inventionfurther consists in the construction of the details and thearrangement of parts all as will be fully described further down inconnect-ion with the accompanying drawing in which Figure 1 representsin elevation a wateractuated automatic electric safety device, attachedto a. boiler, which embodies in desirable form the present improvements.Fig. 2 is a vertical section on line 2, 2 of Figs. 1 and 5 showing thedevice at high 0r normal water level. Fig. 3 is a like view showing thedevice at low or dangerous water level. Fig. 4 is an enlarged detailview in transverse section of an electric contact device on line 4 4 ofFig. 3, and Fig. is a horizontal sec: tion on line 5-5 of Figs. 1 and 2.

Similar characters of reference denote like parts in all the figures.

When the water in the boiler drops to a certain point the deviceoperates an alarm bell which calls the attention of the enginecr,janitor, owner or person in charge of the place to the low water levelin the boiler preventing thus that same drops to a dangerous pointwhereby the boiler and property in thev proximity of same as well aspersons are kept out of danger.

In the drawing a. represents a vertical tubular receptacle preferablymade of metal. The tubular receptacle a is formed on one which ispreferably cast therewith in one piece. .'X'semi-circular hollow toppart c is provided, which lits the top of t ie tubular cured theretobyscrews d. Both form va. housing for a wheel c mounted on a shaft f,which rests in the. bearings 1/ shown Yin Fig. 5. The wheel c has` threespokes, t, 71.*, h2. A hollow cylindrical float i is provided withinthe. tubular receptacle. lt is made of metal, preferably thin coppersheeting. A metal guiding rod j is rigid y connected to the centralbottom portion of the float. lt eX- tends down into an iron pipe whichconnects the device with the boiler l.. A link consisting of two metalrods m is movably connected with its bottom end to the central'topportion of the float. It extends vertically up and is movablyseeured thespoke h2 of the wheel e.

In order t-o prevent the device from becoming air-bound, an automatica'ir valve o is provided in the top portion of the cylindricalreceptacle, a. Atube p at the top of the housing connects with the steampart of the boiler. The top portion c of the housing for the wheel e isprovided with two electric contacts g, g., which are insulatedtherefrom, as shown inV detail in Fig. 4. The Wheel e likewise isprovided with an insulated electric contact r. From the contacts g wireslead to an electric battery s and an alarm bell t.

The safety device operates in substanf tially the following manner: Whenthere is sufficient water in the boiler the lioat fi is in about theposition indicated-in Fig. 2; that is, in the top portion of thetubularl receptacle a.. Then the float rises the rod m nieves the wheele from left to right viewing Figs. 2 and 3. ihen the water level dropsthe float sinks down accordingly and the rod m pulls the wheel fromright to left until the contact -r on the spoke h of the wheel strikesagainst the contacts g, Q, as shown inl Figs. 3 and 4 whereby thecircuit is closed and the alarm bell operated. Any person in charge ornear is thus `:ware of danger and will care that the boiler is suppliedwith fresh water,

a will rise carrying again with it the'float which likewise carriesupward the movable 'w'heieupon'tlie water level in the receptacle sideof the top into a curved extension bf part and its extension andispreferably sethe wheel e from left to right wherebj-v the circuitI isbroken.

It is self-.evident that one electric alarm bell and bat-tery'may beused in connection with any number of boilers in one establishment..

Having thus described my invention l claim as new and desire to ,secureby Letters Pat-ent: v

1. A water actuated automatic electricI safety device for boilerscomprising a vertical tubular receptacle with bottom pipe forconnect-ing with the boiler formed on one side at the top into a curvedextended portion, a semi-circular hollow top part secured to the top ofthe tubular receptacle and its extension both forming a housing, a wheelmounted within said housing, a cylindrical lloat within the tubularreceptacle, al guidingl rod rigidly connected to its bottom centralportion extending int'o the bottom pipe, a second rod movably securedwith its lower end to the top central portion of said float and ,withthe uppe'i` end to one spoke of the wheel, two electric contacts in thetop portion of the semi-circular part of the housing insulatedtherefrom, an insulated electric contact in said wheel, an electricbattery and an alarm bell.

.2. In a water actuated automatic electric safety device for boilers avertical tubular receptacle with bott-0m pipefor connecting with theboiler formed on one side at the top into a curied extended portion, anair valve 1n the top portion of. the tubular part, a

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a' semi-circulai` hollow top part secured to the l top of the tubularreceptacle and its exteng sion both formingr a housing, a wheelmountedwithin said housing, a cylindrical lloat j within the tubularreceptacle, a guiding rod rigidly connected to its bottom central porltion extending into the bottom pi a second rod movably secured with itsower end to the top cent-ral portion of said float and with the upperend to one spoke of the wheel, two electric contacts in the-top portionof the semi-circula.' part of the housing insulated therefrom and aninsulated electric contact in said Wheel.

3. ln a water actuated automatic electricsafety device for boilers aVertical tubular receptacle with bottom pipe for connecting with theboiler formed on one side at the top into a curved exten-ded portion, anair Valve in t-he top portion of said tubular receptacle, a.semi-circular hollow part securedto Said tubular receptacle and itsentension both forming a housing, and a pipe at the top of saidsemi-circular part. for connecting with i the steam part of the boilerin combination with a wheel mounted in the housing, a float within `thetubular receptacle and a metal rod inovably secured with the bottom endto the central top portion of the float, and

its top end to one spoke of the wheel.

Signed at New York, N. Y., this 25th day i of February, 1908. CHARLESKAUSEN.

l Witnesses l LUDWIG K. BHM, v l MARGUERITE L DEINZER;

